scholarly journals AIR QUALITY CONTROL MODEL (DUST PARTICLE) WITH SPRAY TOWER

2020 ◽  
Vol 39 (4) ◽  
pp. 193-198
Author(s):  
Hari Rudijanto I.W ◽  
Asep Tata Gunawan ◽  
Zaeni Budiono
Keyword(s):  
Air Pollution ◽  
Air Temperature ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Water Discharge ◽  
Dust Particles ◽  
Average Content ◽  
Rice Husks ◽  
Particle Content ◽  
Spray Tower

Introduction:Air is a gas mixture that consists of several components and is spread throughout the area. Air pollution is the presence in the atmosphere in the form of solid particles, liquid droplets or gaseous components abnormally or in the presence in greater concentrations. There is an easy way to control air pollution by reducing the source of the pollution. However, control is part of air health as with the concept of water treatment. The purpose of this study was to design a device to defray the particles of spray tower dust at a low cost. Methods: This type of research used a pre experiment with the aim of testing the Spray Tower tool in reducing the levels of dust particles from the combustion process with coal briquettes, rice husks, and old tires. The pre test was coal briquettes, rice husk ash, and tires without being sprayed with water. The post test were coal, rice husks, and tires with sprayed water (with the help of 1 nozzle, 2 nozzles and 3 nozzles). The independent variable is the number of nozzles sprayed, the dependent variable includes a decrease in the level of dust particles while the disturbing variable consists of sprayed water discharge, weight of coal briquettes, rice husk ash and tires, air temperature, humidity, height of spraying tower, nozzle diameter. Result and discussion:  of the study the average air temperature was 20.17oC, humidity was 82%. The water discharge for 1 nozzle is 47.76 ml / second, 2 nozzles are 83.75 ml / second and 3 nozzles are 113.76 ml / second. The initial particle content of old tires was 3,020,000 μg / m3, coal briquettes (420,000 μg / m3) and rice husk ash (110,000 μg / m3). The average content of used tire dust particles with one nozzle (1,273.33.33 μg / m3), coal briquettes with one nozzle (361,666.67 μg / m3) and rice husk with one nozzle (23,333.33 μg / m3). The average dust particle content of old tires with two nozzles (16,666.67 μg / m3), coal briquettes with two nozzles (195,000 μg / m3) and rice husks with two husks (18,333.33 μg / m3). The average content of used tire dust particles with three nozzles (13,333.33 μg / m3), coal briquettes with three nozzles (13,333.33 μg / m3) and rice husks with three husks (13,333.33 μg / m3). Conclusion:When compared with Government regulation no. 41 of 1999 is still far from the standard 230 μg / m3 (24 hours), 90 μg / m3 (1 hour). Suggestion It is necessary to conduct other similar studies with a larger sample size, varying air pollution groups, modified models and diameters, controlled gross flow rates. 

scholarly journals PRODUCTION OF SODIUM SILICATE FROM RICE HUSK ASH WITH REGULATORY SETS MAGNESIUM

Tibuana ◽  
2020 ◽  
Vol 3 (01) ◽  
pp. 47-52
Author(s):  
Yanatra budi Pramana ◽  
M. Amin Pahlevi ◽  
Zhulianto Ashari ◽  
M. Fariz Effendi ◽  
Fibra Gilang Ramadhan
Keyword(s):  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Silica Content ◽  
Cosmetic Products ◽  
Rice Husks ◽  
Mg Addition ◽  
Increase Silica Content

Utilization of rice husks in Indonesia in general is still very limited. Utilization of silica contained in rice husk ash, which has been used, among others, in the manufacture of sodium silicate. Silica compounds themselves can be used in and manufacturing basic materials for electronic and ceramic equipment, glass, rubber, cosmetic products, and pharmaceuticals. The addition of Mg can increase the silica content (SiO2) in rice husk ash. The best results show an effective Mg ratio of Mg addition to increase silica content is 1: 1. produces the highest amount of silica which is 58.12% of the rice husk ash with a size of 140 mesh

scholarly journals Hydrochloric Acid Pretreatment of Different Types of Rice Husk Ash Influence on the Properties of Cement Paste

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1524 ◽  
Author(s):  
Jing Liu ◽  
Chunyan Xie ◽  
Chao Fu ◽  
Xiuli Wei ◽  
Dake Wu
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Cement Paste ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Control Sample ◽  
Control Group ◽  
Rice Husks ◽  
Acid Pretreatment ◽  
Blank Control Group

When properly processed, rice husk ash (RHA) comprises a large amount of SiO2, which exhibits a high pozzolanic activity and acts as a good building filler. In this paper, the effects of rice husk ash content, acid pretreatment, and production regions on the compressive and flexural properties and water absorption of a cement paste were studied. The experimental results showed that the compressive strength of the rice husk ash was the highest with a 10% content level, which was about 16.22% higher than that of the control sample. The rice husk after acid pretreatment displayed a higher strength than that of the sample without the acid treatment, and the rice husk from the Inner Mongolia region indicated a higher strength than that from the Guangdong province. However, the flexural strength of each group was not significantly different from that of the blank control group. The trend observed for the water absorption was similar to that of the compressive strength. The variation in the RHA proportions had the greatest influence on the properties of the paste specimens, followed by the acid pretreatments of the rice husks. The production regions of the rice husks indicated the least influence.

Synthesis and Characterization of Antibacterial Silver Nanoparticle-Impregnated Rice Husks and Rice Husk Ash

2013 ◽  
Vol 47 (10) ◽  
pp. 5276-5284 ◽  
Author(s):  
Di He ◽  
Atsushi Ikeda-Ohno ◽  
Daniel D. Boland ◽  
T. David Waite
Keyword(s):  
Rice Husk ◽  
Silver Nanoparticle ◽  
Rice Husk Ash ◽  
Synthesis And Characterization ◽  
Rice Husks

scholarly journals Characterization Nanofillers from Agriculture Waste for Polymer Nanocomposites Reinforcement

2018 ◽  
Vol 156 ◽  
pp. 05020 ◽  
Author(s):  
Bastian Arifin ◽  
Sri Aprilia ◽  
Pocut Nurul Alam ◽  
Farid Mulana ◽  
Amri Amin ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Agricultural Waste ◽  
Xrd Analysis ◽  
Ftir Analysis ◽  
Rice Husks ◽  
Agriculture Waste ◽  
Packaging Industry ◽  
Rice Husks Ash

The current development of the packaging industry is increasing as well as the dependence of non-renewable oil-based materials encouraging researchers to look for alternative polymeric strengthening materials from biomass. Especially used from agricultural waste because it is cheap and widely available in nature and it can be renewed. In this study, agriculture waste used were rice husk and rice husks ash that prepared as organic nanofillers for the development of polymer nanocomposites. XRF analysis showed that rice husk ash has the highest silica (SiO2) content of 89. 835%, while rice husk has SiO2 contents of 82.540%. From XRD analysis on 2 theta there is a crystalline silica region at 22° and this analysis shows the sample is amorphous. FTIR analysis showed Si-H at peak 2339 cm−1 in rice husk and 2129 cm−1 for rice husk ash.

scholarly journals Crystal Structure and Thermal Behaviour of Calcium Monosilicate Derived from Calcined Chicken Eggshell and Rice Husk Ash

2021 ◽  
Vol 2129 (1) ◽  
pp. 012040
Author(s):  
Nur Hazlinda Jakfar ◽  
Khor Shing Fhan ◽  
Banjuraizah Johar ◽  
Nur Maizatul Shima Adzali ◽  
Siti Nur Hazwani Mohd. Yunus ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Silicon Dioxide ◽  
Heating Rate ◽  
Calcium Oxide ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Sintering Temperature ◽  
Rice Husks ◽  
Mixed Powder ◽  
Chicken Eggshell

Abstract This study focuses on the synthesis of synthetic calcium monosilicate ceramic from chicken eggshells and rice husks waste through the mechanochemical route that relatively straightforward without adding any binders. Synthetic calcium monosilicate was mixed using a 1:1 ratio of calcined eggshell and rice husk ash, which both materials known as rich in calcium oxide and silica sources, respectively. The mixed powder was pressed using uniaxial pressing before fired at 1100°C, 1150°C, 1200°C, 1250°C, and 1300°C for 120 minutes with a heating rate of 5°C/min. The XRD spectrum from 1100°C to 1200°C mainly consists of pseudowollastonite (ICSD: 98-005-2576), wollastonite and silicon dioxide phases. However, as the sintering temperature increases, the wollastonite phases was completely transformed into pseudowollastonite, leaving some unreacted silica.

Coating Mortar Using Rice Husk Ash as Binding

2012 ◽  
Vol 727-728 ◽  
pp. 1502-1507 ◽  
Author(s):  
Izabelle Marie Trindade Bezerra ◽  
Suélen Silva Figueiredo ◽  
João Batista Queiroz de Carvalho ◽  
Gelmires Araújo Neves ◽  
Jozilene de Souza ◽  
...  
Keyword(s):  
Rice Husk ◽  
Large Volume ◽  
Rice Husk Ash ◽  
Agricultural Waste ◽  
Environmental Cost ◽  
Rice Husks

The use of agricultural waste has become a necessity due to the high environmental cost derived from its improper disposal in nature. In this scenario, rice husks, as well as the ash produced by burning, became worrying in certain regions of the country due to the large volume produced annually [.

Synthesis and Characterization of Biosilica from Rice Husks as a Catalyst for the Production of Biodiesel

2021 ◽  
pp. 38-43
Author(s):  
Herman Hindarso ◽  
Indah Epriliati ◽  
Dede Hoerudin ◽  
Sri Yuliani
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Oxide Content ◽  
Test Results ◽  
Rice Husks ◽  
Calcination Process ◽  
Xrf Scanning ◽  
Naoh Solution ◽  
Material Preparation

The synthesis of silica particles from rice husk is a research based on natural materials and is classified as green material. Preparation of biosilica catalyst from calcined rice husk ash was carried out by the hydrothermal method using rice husk ash mixed with NaOH solution at a ratio of 1:5 (w/v) with the reaction temperature of 110-120°C, the pressure of 0.15-0.2 MPa for 15-30 minutes. Biosilica results are then continued with the calcination process at a temperature of 200-500°C for one hour. Biosilica with calcination is then compared to biosilica without calcination. These two kinds of biosilica are then characterized to determine their performance. The biosilica characteristic test that was carried out included X-Ray Fluorescence (XRF), Scanning Electron Microscopy(SEM), and Brunauer-Emmett-Teller (BET). The XRF test results show that biosilica with calcination process has higher silica and silica oxide content than that without calcination. The surface morphology of biosilica with calcination and without calcination gives an uneven surface and consists of lumps and with uneven distribution on the surface of the biosilica sample. Biosilica with calcination process has a larger surface area, pore volume, and radius than biosilica without calcination process.

scholarly journals Rice Husk Ash Pozzolan as Valuable Supplement in Concrete for Industrial and Domestic Applications

2019 ◽  
pp. 1-7
Author(s):  
A. E. Duke ◽  
E. E. Eno
Keyword(s):  
Particle Size ◽  
Size Distribution ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Coarse Grain ◽  
Test Machine ◽  
Particle Sizes ◽  
Rice Husks ◽  
Average Strength ◽  
Controlled Burning

Controlled burning of rice husks at<700°C produced rice husk ash (RHA) which is predominantly amorphous silica (SiO2). RHA was used as a substitute for laterite and cement in proportions of 5%, 10%, 15%, 20%, 25% and 30% of concrete. The concrete was cured for 7 days, 14 days, 21 days, and 28 days respectively. It was observed that 20% of RHA provides the optimum strength. The effects of different particle sizes of 75, 150, 212, 300, 425 and 600 microns (µm) were tested using a compression test machine. A graph of average strength against particle size indicates 2.9 Nm-2 as the optimum strength at 75 µm and 1.2 Nm-2 as the minimum at 150 µm. From the ash size distribution, the presence of grains of several different sizes was observed. The grains were weighed using a weighing machine and a graph of particle size against percentage plotted to determine the particle size distribution. This showed that rice husk ash (RHA) is coarse grain material.

Mechanoactivation Of Rice Husk Ash In Laboratory Conditions

2019 ◽  
pp. 20-26
Keyword(s):  
Mechanical Activation ◽  
Rice Husk ◽  
Amorphous Silica ◽  
Silicon Oxide ◽  
Rice Husk Ash ◽  
Pozzolanic Activity ◽  
Maximum Solubility ◽  
Laboratory Conditions ◽  
Before And After ◽  
Mineral Additive

In many rice producing countries of the world, including in Vietnam, various research aimed at using rice husk ash (RHA) as a finely dispersed active mineral additive in cements, concrete and mortars are being conducted. The effect of the duration of the mechanoactivation of the RHA, produced under laboratory conditions in Vietnam, on its pozzolanic activity were investigated in this study. The composition of ash was investigated by laser granulometry and the values of indicators characterizing the dispersion of its particles before and after mechanical activation were established. The content of soluble amorphous silicon oxide in rice husk ash samples was determined by photocolorimetric analysis. The pizzolanic activity of the RHA, fly ash and the silica fume was also compared according to the method of absorption of the solution of the active mineral additive. It is established that the duration of the mechanical activation of rice husk ash by grinding in a vibratory mill is optimal for increasing its pozzolanic activity, since it simultaneously results in the production of the most dispersed ash particles with the highest specific surface area and maximum solubility of the amorphous silica contained in it. Longer grinding does not lead to further reduction in the size of ash particles, which can be explained by their aggregation, and also reduces the solubility of amorphous silica in an aqueous alkaline medium.

Desalination Technology of Water by using Rice Husk Ash

2014 ◽  
Vol 27 (2) ◽  
pp. 148-160
Author(s):  
Hassan K. Hassan ◽  
Najla J. Al-Amiri ◽  
Mohammed M. Yassen
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Desalination Technology
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